Katana

Samurai sword

A katana (刀, かたな; lit. 'one-sided blade') is a Japanese sword characterized by a curved, single-edged blade with a circular or squared guard and long grip to accommodate two hands. Developed later than the tachi, it was used by samurai in feudal Japan and worn with the edge facing upward.

From Wikipedia, under CC BY-SA. More on occurri.